Grease-trap.



PATBNTBD MAR. 24, 190s.

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UNITED" STATES PATENT OFFICE..

ALBERT S.'NE\\"'TN, OF PROVIDENCE, RHODE ISLAND.

GREASE-TRAP;

SPECIFICATION fox-ming` part of Letters Patent N o. 723,618, dated March 24, 1903. Application led November 14, 1901. Serial No. 82,241. me model.)

To all whom it' may concern:

Beit known that I, ALBERT S. NEWTON, a citizen of the United States, residing at Providence, in the'coiity of Providence and State of Rhode Island, have invented a new and useful Improvement in Greaseffrapspf which the following is a specification.

'lhis invention has reference to an improvement in the class of waste-traps designed to retain grease or fatt-y matter to prevent the discharge of such matter into the conduit, pipes, or sewer.

The object is-to facilitate the separationof the fatty matter from the water, the retention of the grease, and the cleaning of the trap.

To this end the invention consists in the peculiar and novel constructionwhereby the flow of the water through the trap is facilitated and the fatt-y matter collected, as will be more f nlly set forth hereinafter.

In hotels, restaurants, and other places where dish and other waste water containing grease is discharged the fatty matter combines with other impurities and may close t-he discharge pipes or ducts. 'hen the water containing the fatty matter is agitated and then allowed to stand .while it cools, the water will separate from the grease and may be discharged practically free from fatty matter. I have designed'a grease-trap provided with chambers constructed to facilitate the collecf tion of the grease, the discharge of the water,

and the removal of the grease.

Figure 1 is a longitudinal sectional view of my improved grease-trap. Fig. 2 is a transverse section on the line X X of Fig. 1. Fig. 3 is an end view of one of the partitions by which the body of the trap is divided into a series of chambers. A baille-plate is shown pivotally connected-with the partition and in dicated in broken lines in the raised position.

In the drawings, A indicates the tank, forming the main body of the grease-trap, 1S the inlet-pipe, and C the outlet-pipe. 'lhe crosssectional areas of the inlet and outlet pipes nre onlya fraction of the cross-sectional aren ofthe tank A-as shown in the drawings about as one to sixty. The tank is provided with the removable coverD. The partitions a, b, and c divide the tank A into the chambers 1, 2, 8, and 4. The partitions may be fixed in ,a2 of the chamber 4.

thetank when the battle-plates are pivotally secured, so that they maybe lifted to give access to the chambers for cleaning. In the preferred form the partitions are inserted into may be drawn out and the whole of the interior of the tank be accessible for cleaning. The bathe-plate al has the down ward-extending lip a, acting as a skimmer to retard the outtlow of the grease collected under the baf-l fle-plate. A stop-plate a3 -on the opposite edge of the baille-plate bears on the partition below the hinge to support the baille-plate, and the pawl of" locks the same in the operative position. lhe partition c is provided with the opening c'at its lower end .to permit the outflow of the waste water from the lower part of the chamber toward the outlet-pipe, as shown in Fig. l and indicated in broken lines in Fig. 2. The cover D is fastened to the top of the tank A by the hinged bolts dd.

I will now describe the operation of my improved grease-'trap. The waste water, usually heated, is discharged through the inlet-pipe B into the chamber 1 of the tank A near the bottom. Owing to the large area of this chamber the flow of the Waste water is slow. The water cools, and the fatt-y matter separates and ows upward and is in'part retained by the baille-plate a2. The waste passes from the contracted outlet of the chamber 1 into the chambers 2 and 3, where the cooling and separation continue, so that the waste water is practically free from grease and may flow through the opening c' intothe chamber 4 and directly through the same 'out of the outlet-pipe C. As the chamber-4 .is

provided with a baille-plate a2, the now cooled and cakedigrease is prevented from entering the chamber 4.

It is evident that should the opening c' be- A come clogged or tillednpthen the waste wateiwill flow over the partition c and into the chamber 4, and should,A there still be any grease or fatty matter'carried with it the grease will rise and be held by the baille-plate v The battle-plates tend to collect the grease or other fatty matter in a solid mass, thereby preventing the same from being carried along by a snddentlow of the waste water through the trap.

S5 grooves formed by the Ways a' a', so that they Having thus described' my invent-ion, I claim as new land desire to secure by Lett-ers Patenf- 1. In a grease-trap, the combination with the trap-body, the inletand outlet pipes, and the removable cover, of removable partitions dividing: the trap-body into chambers, ways inthe sides of the Irap-body for the partitons,hin;1ed ieiiector-piates extending across parts of the chambers, downward-extending lips on the defieetor-plates, and pivoted pawis for iocking the d'eector-piates in op- C, the cover D, the removable partition a, with the haine-plate 'al hinged to the. partition, having the lip uvand the stop-plate a, the pawi av, the partition I and the partition c having the opening c' all arranged so as to retard the non and separate the the water, as described.

In testimony whereof two subscribing witnesses.

p ALBERT S. NEWTON. Witnesses: y

ADA HAGERTY, J. A. MILLER, Jr.

grease from y y I have signed my name to this specification in thepresenee of 

